DE19611051B4 - household appliance - Google Patents

Abstract

Domestic appliance, in particular domestic dishwasher, at least comprising a pivotable about a horizontal axis (3) mounted door (2) and a device (10). for balancing the weight of the pivotally mounted door (2) with at least one spring (5), which is connected to a with the door (2) connected band or rope-shaped transmission means (11), characterized in that the transmission means (11) by means of a connected to it permanently connected to connecting part (21) on one with the spring (5) hooked part (30), wherein the hooking part (30) in the receiving area for the connecting part (21) has the shape of a centrally slotted eyelet (31), whose front and lateral boundaries are formed by two hooks (32, 33) whose ends (34, 35) project at a distance (x) from one another, wherein the connecting part (21) comprises two regions (22) arranged next to one another at a distance (y) , 23), opposite to the remaining connecting part (21), forming a web, at least by the thickness of the Einhängeteils (30) are discontinued, and wherein in the assembled state of the web in the through the hooks (32, 33) formed slot ei falls and end faces (25, 26) of the stepped portions at inner edges (36, 37) of the hooks (32, 33) of the Einhängeteils (30) come to rest.

Description

HOUSEHOLD APPLIANCE

The invention relates to a household appliance, in particular domestic dishwasher, at least comprising a pivotally mounted about a horizontal axis door and a device for balancing the pivotally mounted door with at least one spring which is connected to a connected to the door belt or rope-shaped transmission means.

Such compounds are z. B. in household appliances with a pivotable about a horizontal axis, mounted on a housing door to balance the weight of the door needed to facilitate the handling, in particular the closing of the door for the user. The weight balance is achieved by a housing attached to the door by means of transmission or directly connected spring, usually a tension spring.

From the DE 74 32 124 U is a device for weight balance of a front, pivotable about a horizontal axis, mounted on a housing door of a domestic dishwasher, which is connected to a tension spring attached to the housing by means of a ribbon or rope-shaped transmission means, known in which the transmission means in a through Erecting a last turn of the spring made eyelet of the spring is mounted in a manner not described.

From the DE 617 087 A is a compound of a pull rope with a coil spring known in which a connected to the pull rope holding part is inserted in a narrower end turn of the coil spring.

From the DE 928 149 B a compensation device for a condescible window of a railway car is known in which also connected to a pull cable connecting body is directly connected to a coil spring.

From the US 2,924,448 A is known to make a connection with a coil spring by a hook-shaped connecting element is brought into contact with inner surfaces of the coil spring, wherein the radii of the turns of the inner surfaces of the coil spring decrease toward one end of the coil spring. The connecting element takes over the function of an eyelet of the coil spring completely, if the eyelet breaks off from the coil spring.

From the GB 950 499 A a tensioning device for a pull rope is known in which the pull rope is connected to a complex constructed connecting body, which is in operative connection with a threaded rod which acts via a cap on a coil spring, wherein by means of nuts the position of the cap changed and thus the spring tension can be adjusted.

From the DE 37 22 304 A1 is a weight balancing device for door leaves, in particular for overhead movable one-piece door leaves, known in construction, in which a plurality of parallel coil springs are connected to a connection carrier which is directly connected to a perforated belt without the interposition of other connecting means.

From the US 4,919,558 A For example, a pig with a cleaning head for cleaning pipelines is known in which an adapter for the cleaning head is connected to a helical cable via a tow bar of the cable.

From the DE 38 40 900 A1 is known a helical tension spring with a one-sided attachment lug, wherein the attachment lug is formed by a T-piece, the transverse web rests against a shoulder formed by a narrower end portion of the helical tension spring.

From the CH 20 192 A a coil spring is known in the longitudinal end portion of a comparatively flat Einhaköse is used, wherein the Einhaköse has a shaft which is provided with two side projections which engage between spring coils of the coil spring.

In practice, it has been found that the springs under a comparatively high tension in a counterbalancing device break particularly on a loop made by erecting one last turn of the spring after a relatively small number of load changes, that is, door opening movements. Furthermore, the threading of an end of a transmission medium is time-consuming and therefore expensive, and it is the attachment of a mounting option on the transmission means, usually an eyelet necessary, which means a further operation and brings in a compound of a spring and a transmission means another fracture vulnerable point.

The invention is therefore an object of the invention to provide a simple way a household appliance with a device for connecting a spring with a ribbon or rope-shaped transmission means that is easy to assemble and in which the risk of breakage is largely avoided.

This object is achieved in that the transmission means is mounted by means of a fixedly connected to him connection part to a spring connected to the hooking part.

Due to the fixed connection between the band or rope-shaped transmission means and the connecting part of the above-described fracture vulnerable sites is effectively replaced. By attaching the Einhängeteils to the spring is the most vulnerable point, namely, as in the prior art, the bent-last winding of the spring and thus the risk of breakage effectively avoided. With the hanging of the connecting part in the Einhängeteil a substantial ease of assembly over the threading in the prior art succeeded. With the device according to the invention for connecting a spring with a ribbon or rope-shaped transmission means a device is provided in a simple manner, which is easy to assemble and in which the risk of breakage is largely avoided.

According to the invention, the Einhängeteil in the receiving area for the connecting part has the shape of a slotted in the middle eyelet whose front and side boundary of two hooks is formed, the ends of which project at a distance from each other, whereby a simplification of the assembly is achieved.

In this case, the connecting part has two at a distance juxtaposed areas, which are offset at least by the thickness of the Einhängeteils, whereby a simplified insertion of the connecting part according to the invention in the suspension part according to the invention is possible without the safety of the connection is narrowed. The connecting part is z. B. placed on top of the Einhängeteil from the top, wherein come through the tension of the spring in the use state, the front ends of the remote areas at the inner edges of the hooks of the Einhängeteils to the plant.

According to the invention falls in the assembled state of the web in the slot formed by the hook and end faces of the remote areas come to inner edges of the hooks of the Einhängeteils to the plant.

Conveniently, the distance of the remote areas corresponds at most to the distance between the ends of the hooks of the Einhängeteils, so that an additional guidance of the inserted connecting part is achieved.

A further ease of assembly is achieved in that the connecting part at the opposite ends of the transmission element has a covered area of a plate, wherein between the underside of the plate and the surface of the remote areas at least one of the thickness of the Einhängeteils corresponding distance remains because by the overlap a holder for the loose connection part on the Einhängeteil is possible even before the onset of tension of the spring.

Advantageously, the slotted eyelet has a substantially rectangular shape with substantially rectangular hooks and the connecting element substantially a cuboid shape, whereby a simple production of the parts of the device according to the invention is achieved.

In a particularly advantageous manner, the inner edges of the hooks, which form a boundary of the eyelet opening and the end faces of the remote areas inclined towards the distance to the eyelet opening, which means a further facilitation of assembly due to the hinterhakenden effect and thus improved support.

Preferably, the transmission means is a rope which is made of a thermoplastic material. In practice, it has been shown that z. B. Steel ropes wear faster than plastic ropes.

As a particularly durable a transfer means has shown in practice, which is a braided rope made of polyester.

A particularly simple production and particularly unbreakable connection between the connecting part and the transmission element is created by the fact that the connecting part is produced encapsulated around the transmission element.

Preferably, the connecting part is made of POM, which has proven in practice to be particularly resistant to breakage.

The invention will be explained below with reference to the embodiment shown in the drawing. Show it:

1 a section through a machine base of a domestic dishwasher,
and

2 an enlarged view of the device according to the invention according to the detail II in 1 ,

An unspecified household dishwasher has a front, about a horizontal axis 3 swiveling, in a machine base 1 which is part of a housing, stored door 2 on. This door 2 is on both sides of the front of the machine base 1 with one each with the door 2 connected hinge 4 connected in a manner not described in detail. A device 10 for weight balance consists of one in the machine base 1 attached tension spring 5 , by means of a ribbon or rope-shaped transmission means 11 , In the illustrated embodiment by means of a rope 11 from a thermoplastic, preferably a braided rope 11 made of polyester, with the door 2 , or in the embodiment with the hinge 4 , connected is. This rope 11 is located at one in one in the machine base 1 fastened carrier 12 arranged deflection roller 17 under tension and encloses these partially.

According to the invention, the transmission means, in the embodiment, the rope 11 , By means of a firmly connected with him connection part 21 , at one with the spring 5 firmly connected suspension part 30 hung as best in 2 you can see.

The hanging part 30 has in the receiving area for the connecting part 21 , the shape of a slotted eyelet in the middle 31 whose front and side limits of two hooks 32 . 33 is formed, whose ends 34 . 35 protrude at a distance x against each other.

The connecting part 21 has the shape of a flat disk, in two at a distance y juxtaposed areas 22 . 23 at least the thickness of the Einhängeteils 30 is discontinued. This distance y of the remote areas 22 . 23 corresponds at most to the distance x of the ends 34 . 35 the hook 32 . 33 of the suspension part 30 , In the embodiment shown, the distance y of the two remote areas 22 . 23 chosen slightly smaller than the distance x of the ends 34 . 35 the hook 32 . 33 To attach the connector 21 in the Einhängeteil 30 to facilitate.

The connecting part 21 indicates at the opposite end of the transmission element of the remote areas 22 . 23 of plates 24 covered areas, being between the bottom of the plate 24 and the surface of the remote areas 22 . 23 at least one of the thickness of the Einhängeteils 30 appropriate distance remains. In 2 is a plate above the stepped area 22 left out the hook 33 to represent more clearly.

In the exemplary embodiment, the slotted eyelet 31 a substantially rectangular shape with substantially rectangular hooks 32 . 33 , where the inner edges 36 . 37 the hook 32 . 33 , which form a boundary of the eye opening, are arranged inclined in the direction of the distance x to the eye opening. The connecting part 21 has a substantially cuboid shape, wherein the end faces 25 . 26 the remote areas 22 . 23 according to the inner edges 36 . 37 the hook 32 . 33 are also inclined.

The connecting part 21 made of POM is around the braided rope 11 made of polyester overmoulded.

The hanging part 30 is at the spring 5 by means of lateral boards 38 . 39 attached, with one of the eyelet 31 opposite trapezoidal, then to the lateral boards 38 . 39 arranged insertion aid 40 so far in the spring 5 is pressed until at least the first winding over the outer edges of the lateral boards 38 . 39 skips and the hanging part 30 near the eyelet 31 encloses.

To adjust the spring force is in the described embodiment, the carrier 12 holding a prominent investment pencil 13 has, pivotally mounted on the machine base 1 stored, with the fulcrum 16 of the carrier 12 in one of the door bearing axis 3 as far as possible height distance a is arranged. The rope 11 is located on the investment pen 13 of the carrier 12 on one of a set screw 15 opposite side. The adjusting screw 15 is at one of the fulcrum 16 of the carrier 12 towards the door 2 other end of the carrier 12 to what the carrier 12 a contact surface 14 having. The pulley 17 is at the fulcrum 16 of the carrier 12 rotatably mounted. The fulcrum 16 of the carrier 12 is from one on the machine base 1 attached bearing pin 18 formed, on which also the pulley 17 is rotatably mounted.

To increase the force of the tension spring 5 , z. When at the door 2 a furniture plate is attached to adapt the household dishwasher to a kitchen front, which of course the weight of the door to be compensated 2 changes, the set screw 15 towards the wearer 12 screwed in, taking them to rest on the contact surface 14 of the carrier 12 and this comes around the pivot 16 of the carrier 12 forming bearing pin 18 towards the inside of the machine base 1 is pivoted, due to the attachment of the rope 11 at the investment pin 13 the rope 11 is taken. By this action on the rope 11 , this is from the position without the action of the adjusting screw 15 , ie from the in the rest position, by the selected arrangement predetermined enclosing angle of the guide roller 17 shifted, resulting in an extension of the bond between rope 11 and tension spring 5 leads and which, because the rope 11 is not substantially stretchable, an elongation of the tension spring 5 and thus an increase in the tension spring force is achieved. In 1 is the device 10 shown with solid lines in the rest position and with dotted lines in the Maximalverschwenklage.

If, after a Federkrafterhöhung has been set, the spring force should be set weaker again, so the set screw 15 accordingly from the machine base 1 unscrewed, resulting in a shortening of the bond between rope 11 and tension spring 5 and thus a shortening of the tension spring 5 leads, whereby a reduction of the spring force is achieved.

During assembly, the connecting part 21 from above on the slotted eyelet 31 of the suspension part 30 placed, wherein in the distance y of the remote areas 22 . 23 formed bridge in by the distance x of the ends 34 . 35 the hook 32 . 33 formed slot occurs. Then, z. B. by train on the rope 11 , the connecting part 21 , which now lies in the eyelet opening, as far as the hook inner edges 36 . 37 moves until the end faces 25 . 26 the remote areas 22 . 23 on the hook inside edges 36 . 37 abut and this with the plates 24 be at least partially covered. By the tension of the spring 5 in use, the front end surfaces remain 25 . 26 the remote areas 22 . 23 at the inner edges 36 . 37 the hook 32 . 33 of the suspension part 30 in the plant.

With the above-described device according to the invention 20 for connecting a spring 5 with a ribbon or rope-shaped transmission means 11 , in the embodiment with a rope 11 , is simply a device 20 created, which is easy to assemble and where the risk of breakage is largely avoided.

Claims (10)

Household appliance, in particular household dishwasher, at least comprising one about a horizontal axis ( 3 ) pivotally mounted door ( 2 ) and a device ( 10 ). for balancing the weight of the pivotally mounted door ( 2 ) with at least one spring ( 5 ), with one with the door ( 2 ) associated band or rope-shaped transmission means ( 11 ), characterized in that the transmission means ( 11 ) by means of a connecting part fixedly connected to it ( 21 ) on one with the spring ( 5 ) connected suspension part ( 30 ), wherein the suspension part ( 30 ) in the receiving area for the connecting part ( 21 ) the shape of a centrally slotted eyelet ( 31 ), whose front and lateral limits of two hooks ( 32 . 33 ) is formed, whose ends ( 34 . 35 ) protrude at a distance (x) against each other, wherein the connecting part ( 21 ) two at a distance (y) juxtaposed areas ( 22 . 23 ), which in relation to the remaining connecting part ( 21 ), forming a web, at least by the thickness of the Einhängeteils ( 30 ) are discontinued, and wherein in the assembled state of the web in the through the hook ( 32 . 33 ) formed slot and end surfaces ( 25 . 26 ) of the remote areas at inner edges ( 36 . 37 ) the hook ( 32 . 33 ) of the suspension part ( 30 ) come to the plant. Domestic appliance according to claim 1, characterized in that the transmission means ( 11 ) by means of a material connection with the connecting part ( 21 ) and / or the suspension part ( 30 ) by means of a snap connection in the spring ( 5 ) is mounted. Domestic appliance according to claim 1 or 2, characterized in that the distance (y) of the remote areas ( 22 . 23 ) at most the distance (x) of the ends ( 34 . 35 ) the hook ( 32 . 33 ) of the suspension part ( 30 ) corresponds. Domestic appliance according to one of claims 1 to 3, characterized in that the connecting part ( 21 ) at the transmission element ( 11 ) opposite ends ( 25 . 26 ) of the remote areas ( 22 . 23 ) one from a plate ( 24 ) covered area, wherein between the underside of the plate ( 24 ) and the surface of the remote areas ( 22 . 23 ) at least one of the thickness of the Einhängeteiles ( 30 ) corresponding distance remains. Domestic appliance according to one of claims 1 to 4, characterized in that the slotted eyelet ( 31 ) has a substantially rectangular shape with substantially rectangular hooks ( 32 . 33 ) and the connecting element ( 21 ) has a substantially cuboid shape. Domestic appliance according to one of claims 1 to 5, characterized in that the inner edges ( 36 . 37 ) the hook ( 32 . 33 ), which form a boundary of the eye opening and the end surfaces ( 25 . 26 ) of the remote areas ( 22 . 23 ) are arranged inclined in the direction of the distance (x, y) to the eye opening. Domestic appliance according to one of claims 1 to 6, characterized in that the transmission means ( 11 ) is a rope made of a thermoplastic material. Domestic appliance according to claim 7, characterized in that the transmission means ( 11 ) is a braided rope made of polyester. Domestic appliance according to one of claims 1 to 8, characterized in that the connecting part ( 21 ) around the transmission element ( 11 ) is molded over. Domestic appliance according to one of claims 1 to 9, characterized in that the connecting part ( 21 ) is made of POM.

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